MULTIPLYING COMPLEX NUMBERS

• 1

• -1

• 0

A complex number can be expressed as a + bi. What does a represent?

• the real part of the complex number

• the imaginary part of the complex number

• depends on the sign of the number

• the square root of the complex number

What is the value of i ?

• -1

• -i

• 2

What is the imaginary component of the following complex number:  -2 + 9i

• -2
• -9
• 9i
• 7i

Simplify: 
(10+ 15i) - (48 - 30i)

• 58 - 45i
• 58 - 15i
• -38 - 15i
• -38 + 45i

Solve for x.

x² + 16 = 0

• ±4

• ±4i

• -4i

• ±8i

• 6i

Simplify.

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